JPS5963943A - Wound core for axial air gap rotary electric machine - Google Patents

Abstract

PURPOSE:To prevent a wound core from unwinding by opening one end of the core at the inner periphery of the core due to radial opening, forming a plurality of through holes opened at the outer periphery of the core, and inserting a clamping member to the part. CONSTITUTION:A steep band 1 is spirally wound and laminated at one side while punched with slots 3 and holes 5 at the other, and when radial slots 6 are obtained via the matched slots 3, the holes 5 are matched. One end is opened via the matched holes 5 at the inner periphery 7 of a wound core 2, and the other is formed with through holes 9 opened at the outer periphery 8 of the core 2. Screws 11 such as rivets are inserted into through holes 9 at the end 10 or in the vicinity of the end 10 of the band 1, thereby clamping the outer periphery and the inner periphery of the band. The remaining holes 9 are used as vent holes.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a wound core for use in an axially co-located rotating electric machine.

Conventional scavenging and its problems Conventionally, the number of shields used was 188 - 11! Although it is possible to make the entire motor thinner, the manufacturing process for the wound core is slow and cumbersome, and the heat dissipation efficiency of the wound core is low, so it has not yet reached the stage of practical use.

One of the troublesome aspects of the manufacturing process is that the slot portions of the wound and laminated M strips must be perfectly aligned and the copper strips must be prevented from coming apart. Conventionally, as a general treatment for preventing unraveling of wound and laminated materials, there can be mentioned welding treatment at the start and end portions of the wound strip. When creating a wound core as described above, slots are punched in the longitudinal direction of the copper strip at different pitches for each winding prior to winding the copper strip.If the punched copper strips are wound and laminated, In such unraveling prevention treatment, the slots of the wound core after winding and lamination are welded and clamped in a state where they are not completely aligned, resulting in a poor quality of the wound core.

OBJECTS OF THE INVENTION It is an object of the present invention to contribute to perfect alignment of slots, to easily clamp a copper strip so that it does not come loose, and to improve the heat dissipation efficiency of a wound core.

Structure of the Invention The present invention involves punching out slots in a copper strip at a required pitch along its longitudinal direction, winding and laminating the copper strips to form an annular wound core, and extending in the radial direction of the wound core at one end. A plurality of through holes are formed in which one end opens at the inner circumferential surface of the wound core and the other end opens at the outer circumferential surface of the wound iron core.
It is characterized in that a fastening member such as a rivet is inserted into all but one of the through holes to fasten the #] hole on the outer circumferential side and the copper strip on the inner circumferential side.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. (
1) is a copper strip, and (2) is an annular wound core made by thinly winding and laminating the copper strip (1). Slots (3) are punched out in the steel strip (1) at a required pitch along the longitudinal direction of the copper strip (1) before the winding and lamination. (4) In K, a hole (5) is punched at the same position in the longitudinal direction at the same time as the slot part (3), and the required pitch is the slot part (3) that matches when the copper strip (1) is wound and laminated. ) is different from winding to winding so that the slot (6) is formed by the winding.

The fi band (1) has slots (3) and holes (5) punched out on the one hand and a spiral winding lamination on the other, with aligned slots (3) forming radial slots (6). ), the holes (5) are also aligned, and the aligned holes (6) open one end at the inner peripheral surface (7) of the wound core (2) and the other end opens at the outer peripheral surface (7) of the wound core (2). A through hole (9) opened at step 8) is formed. And the terminal part α of the copper band (1)
Q or as shown in the drawing, insert a rivet screw Q such as a parker rivet with an appropriate outer diameter and length into the through hole (9) near the terminal end QO, and and the inner peripheral side can be fastened together to prevent unraveling. This rivet screw QXI can be inserted into several through holes (9) as necessary to make the connection more secure, and in this way, any misalignment of the slots (6) can be forcibly aligned. be able to.

In addition, the remaining through holes (9) into which the rivets and screws are not inserted act as ventilation holes, so that the heat dissipation effect of the wound core (2) can be enhanced.4 In the above embodiment, when there is no skew in the slot (6) This has been explained using an example, but if there is a skew, the punching position of the slot part (3) and the punching position of the hole (5) can be shifted appropriately in the length direction of the copper strip (1). The same can be said of the through-holes (9) having a radial shape without skew, or the through-holes having a skew.

As described in the detailed description of the invention, according to the present invention, it is possible to easily and reliably prevent the wound core from coming apart, and it is also possible to perfectly align the slots. Furthermore, the through holes into which the fastening means are not inserted act as ventilation holes, thereby improving the heat dissipation effect of the wound core. Further, by simultaneously punching holes in the copper strip that are aligned with the slot portions and serve as through holes, it is possible to prevent the copper strip from coming apart without increasing the number of man-hours. In this way, the unraveling prevention process, the slot alignment process, and the heat dissipation efficiency can be improved, and a motor using a wound core can be brought closer to the practical stage.

[Brief explanation of the drawing]

The drawings are perspective views showing an assembly process of an embodiment of a wound core according to the present invention. (1)...Copper band, (2 doors...wound core, (3)...slot part, (4)...yoke part, (5)...hole, (
6)...Thront, (7)...13 circumferential surface, (8)
...Outer surface, (9)...Through hole, 0p...Rivet screw [
fastening member]. Agent Yoshihiro Morimoto

Claims (1)

[Claims] 1. Slots are punched out at a required pitch along the longitudinal direction of the copper strip, and this copper strip is wound and laminated to form an annular wound core, and at the same time extends in the radial direction of the wound core. A plurality of through holes are formed, one end of which opens at the inner circumferential surface of the wound core and the other end of which opens at the outer circumferential surface of the wound iron core, and at least one of the plurality of through holes opens.
A wound core for an axially gap type rotating electrical machine in which a copper strip on the outer circumferential side and a copper strip on the inner circumferential side are fastened together by inserting fastening members such as rivets into all through holes except for one. 2. Holes are formed in the yoke portion of the steel strip at a required pitch along the longitudinal direction of the copper strip so that the through holes are formed by winding and laminating. Winding core of axial gap type rotary m machine.